Cutting-Edge Physics and Chemistry Now Unfold One Attosecond at a Time

Just about anybody who played hide-and-seek as a kid remembers counting, with eyes (presumably) covered, in units of one-one-thousand. “One-one-thousand. Two-one-thousand. Three-one-thousand.” It’s one way to develop a feel for the duration of a second. If you live to be 80 years old, you will experience 2,522,880,000 seconds, not any one of which feels like…

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‘Hybrid’ skull may have been a child of Neanderthal and Homo sapiens

The cranium of a girl thought to be the offspring of Neanderthal and Homo sapiens parents Israel Hershkovitz A 140,000-year-old hominin skull from Israel probably belonged to a hybrid child of Neanderthal and Homo sapiens parents, according to an analysis of its anatomy. The 5-year-old girl was buried within the earliest known cemetery, possibly reshaping what we…

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